About The 850RE / 8HP50
The 8HP50 is an 8-speed automatic transmission developed by ZF Friedrichshafen, known as the 850RE in many Dodge, Chrysler, Jeep and Ram vehicles.
It is known for smooth operation, quick shifts and strong efficiency. It is a well-built unit — and when it needs work, Sun West Transmissions can rebuild it for you in Glendale.
Key Features
- 8-speed planetary gearset — a wide ratio range for better acceleration and fuel economy.
- Adaptive shift logic — learns your driving habits and road conditions and adjusts shift points for smoother operation.
- Double shift strategy — combines torque-based and speed-based shift control for smoothness and response.
- Lock-up torque converter — improves efficiency while cruising.
- Electronic control — integrated with the vehicle’s computer for precise shifting.
- Integral hydro-mount — reduces noise, vibration and harshness.
- Fluid — about 7.5 liters of synthetic fluid (varies by application), with integrated cooling on high-performance models.
Benefits
- Seamless shifting
- Improved fuel economy
- Better acceleration response
- Reduced noise, vibration and harshness
8HP50 Gear Ratios
| Gear | Ratio (approx.) |
|---|---|
| 1st | 4.71 |
| 2nd | 2.84 |
| 3rd | 2.19 |
| 4th | 1.70 |
| 5th | 1.39 |
| 6th | 1.00 |
| 7th | 0.83 |
| 8th (overdrive) | 0.64 |
| Reverse | 3.21 |
Vehicles That Use The 8HP50 / 850RE
The 850RE and 8HP50 are used in many Dodge, Chrysler, Jeep and Ram vehicles. Call us with your year, make and model and we will confirm your transmission and quote your rebuild.
Your Trusted Transmission Shop
Our skilled technicians have the latest tools and technology to diagnose and repair your transmission. See our Dodge transmission prices and Ram transmission prices, or call (623) 473-9800 to schedule.